Impact Assessment of Diverse EV Charging Infrastructures on Overall Service Reliability

This study assesses the impact of diverse electric vehicle charging infrastructures on power system reliability. It considers charging at homes, workplaces, public locations, and commercial fast-charging stations, together with Level 1, Level 2, and DC fast charging. Seven charging infrastructures are evaluated using two widely used reliability indices: Loss of Load Expectation (LOLE) and Loss of Energy Expectation (LOEE). Mixed charging infrastructure portfolios are also analyzed. The results demonstrate that commercial fast-charging stations have the greatest adverse impact on power system reliability, while mixed charging portfolios can result in lower reliability impacts.